Door opening device



May 13, 1941. Q. HAYNES 2,241,994

DOOR OPENING DEVICE Filed March 2, 1939 2 Sheets-Sheet l IZD. HAYNES.

ETTDEHEYS May 13,1941. T. o. HAYNES, 2,241,994

' DOOR OPENING DEVICE I Filed March 2, 1939' 2 Sheets-Sheet 2 JNYENTUR 22-: Q. a YJTE-S .arr TDRNEYxS,

Patented May 13, 1941 UNITED- STAT ES PAT FENCE 3 Claims.

This invention relates toimprovements in door opening devices and has particular reference to hydraulic means for actuating. from a remote point a garage or other type of door.

The principal object of this invention is to produce a device of this character which may be readily attached to a standard door without altering the construction of the garage or building to which the door is attached.

A further object is to produce a device of this character which is economical to manufacture and to install, and a device which will occupy a minimum amount of space.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of thi specification and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a side elevation of my device, showing Fig. 5 is a similar schematic view, illustrating v.

a different position of said mechanism;

Fig. 6 is also a schematic view, further illustrating said mechanism;

Fig. '7 is an enlarged elevation partly in section of the hydraulically operated cylinders and associated mechanisms; and

Fig. 8 is a similar view as Fig. 7, showing the mechanism in a different stage of its operation.

There are many doors which could be conveniently operated from a remote point, and for a convenient disclosure we will consider such a door as a garage door.

It is very obvious that it would be convenient for a person to drive a vehicle into a driveway and to be able to open and close the garage door without disembarking from the vehicle. Applicant has, therefore, devised such a system.

In the accompanying drawings wherein for the purpose of illustration isshown a preferred embodiment of my invention, the numeral 5 designates the side wall of a building; the numeral 6, the door thereof; and the numeral 1, a brace secured to the door and pivoted as at 8 to the side of the building 5. It is, of course, obvious that there is a brace on each side edge of the door. Attached to the wall is a cylinder 9, pivoted at the point and in which is mounted a piston ll, connected to a piston rod [2. The piston rod I2 is connected to a lever l3, which i in turn pivoted as at 14 to a bracket l attached to the brace l. Stops l6 and I1 limit the movement of the lever 13. A locking device, consisting of an L-shaped member I8, is pivoted as at l8 to the wall 5 and has an arcuate surface overlying the end of the lever 13 and has its opposite end provided with a weight 2!, normally held in the positionof Fig. 1 by a pin 22. The cylinder 9 has connected thereto pipes 23 and 24. Each pipe is identical in construction, and, therefore, but one will be described.

Referring to the pipe 24, it will be noted that the same is divided so as to form an inlet branch and an inlet branch 26. The inlet branch 25 is adjacent the end of the cylinder, while the inlet branch 25 is spaced therefrom. The inlet branch 25 has a check valve 2T therein, which is icy-passed by a port 28, the purpose of which will be later seen. The pipes 23 and 24 connect to a reversing valve 29, and pipes 39 and 3! in turn connect to a reversing valve 32. The construction of these valves is well known, and, therefore, no further description of the same is necessary,

The supply pipe is shown at 33, and the exhaust at 34. The reversing valve 32 is located outside of the building and is operated in any convenient manner. In the present instance, I have shown a stand having a handle 35 on the upper end thereof, which handle may be thrown in and out of operation by a key lock, designated at 31.

The result of this construction is that when a person drives into the driveway, turns the key 31 and engages the handle 33 with the valve 32, the same may be turned so as to permit Water to flow from the upply pipe 33 through the proper channels and into the cylinder 9. If the door is closed, the supply will enter through the pipe 23, and the piston H will be moved toward the right of the drawing. The initial movement will cause the lever E3 to move to the dotted line position of 1, and then further movement will cause the door to be pivoted about the pivot 8, as indicated by the arrows. When the piston reaches the far end; of the cylinder, the piston will first cover the inlet 25', and further movement of the piston will be slowed down, as the liquid can only escape through the port 28 into the pipe 24.

After the car is in the garage, the reversing valve 29 may be turned so that the water will flow into the pipe 24 through the branches 25 and 26, lifting the ball valve 21, and the door will be quickly moved to closed position.

The auxiliary means for operating the door valve mechanism consists 'of levers 39 connected to the valve 32 by means of flexible wires 40 connected to the valve lever 4| which is mounted on the operating rod 42 so that the door may be opened or closed from either the inside or outside of the garage by the manipulation of the valve 32.

The valve operating rod 42 is connected to the two-way valve 32, and attached to said rod adjacent to the valve is a cam 43 so that when the rod is rotated, the cam 43 will also rotate and will contact the member 44 fastened to the piston rod 45. When the :cam 43 forces the member 44 outwardly, the valve 46 is unseated from its valve seat 41, as in Fig. 8, thereby allowing fluid to pass through the valve seat to the pipe 48 and into the Valve 32, thence through pipes 30 and 23 to the cylinder 9, causing the piston ll therein, to move to force fluid out through the pipes 24 and 3! to and through thetwo-way valve 32 to the pipe 49.

Simultaneously the cam 43 is forcing the valve 46 from its seat 41, as in Fig. 8, which movement straightens the links 59, and 52', which allows fluid to pass and discharge through openings 34 in the pipe 49 as the cam holds the valve 46 open while passing the element 44 in its travel to change the flow from one end of the cylinder 9 to the other.

The means for holding the valve 43 open after the cam has passed by and its point of contact with the element 44 comprises the link-connections from 5|, 52, and 53. As fluid is passing out through the openings 34 in the pipe 39, the twoway valve 32 is moved and the cam holds the valve 46 open long enough to allow a flow of fluid to start passing through the pipe 49 and out of the discharge thereof. As long as the piston of the cylinder 9'moves, it forces fluid out through the said openings 34, thus preventing the valve 54 from entering the pipe 49 beyond the discharge openings 34 thereof.

The valve 48 cannot close as long as the link connections 59, 5|, and 52 are held in locked position, as shown in Fig. 8. As'soon as the piston ll reaches the end of the cylinder 9, no more fluid is discharged from the pipe openings 34. Therefore, the valve member 54 is forced inwardly by the spring 55 and may move forward, breaking the link points 50, 5|, and 52 and -causing the link points to assume the position shown in Fig. 7. At this position the cam 43 has passed the element 44, and the valve 46 is seated in its seat 41, which movement is assisted by the spring 56, thereby shutting off fluid from the device.

' It requires a quarter turn of the rod 42 to change the flow through the two-way valve, and, therefore, the cam 43 is designed to take the position shown in Fig. 4 when the valve 32 is at the extreme right. When the rod 42 is again moved, the cam 43 contacts the element 44, thereby forcing the valve 46 from its seat 47 and allowing the fluid to pass and straighten the link points 50, 5!, and 52, and the piston 54 holds these members in position until the door 6 is opened or closed or stopped by coming in contact with some object, thus providing a safety element. After pushing the element 44 forward, the cam member 43 passes out of the way, as shown in Fig. 6, so it will not interfere with the element 44. Fig. 6 shows the cam 43 and the valve 32 in extreme left position.

It will be apparent that if a person tries to swing the door when the parts are in the full line position of Fig. l, the lever l3 will contact the arcuate surface 29, and, therefore, the door cannot be swung upon its pivot and will remain closed. However, should the person desire to manually operate the door, a suitable instrument may be pushed through the opening 38,

' and the lever l3 may be manually moved so that the door may be manually swung upon its pivot 8.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a device of the character described, the combination with a building having a swinging door, a cylinder pivoted to the building adjacent the door, a double acting piston in said icylinder, a piston rod having a pivoted link connection with the door, a fluid supply for each end of the cylinder, a valve within the building and controlling said fluid supply, a valve on the outside of the building for controlling the fluid supply to the cylinder, and auxiliary means within the building for operating the valve on the outside of the building, whereby the outside valve may be set in a position to allow the opening or closing of the door from within the building.

2. In a device of the character described, the combination with a building having a swinging door, a cylinder pivoted to the building adjacent the door, a double acting piston in the cylinder, a piston rod having a pivotal connection with the door, a fluid supply for each end of the cylinder, a valve within the building and controlling said fluid supply, a valve on the outside of the building for controlling the fluid supply to the cylinder, and a lever within the building and operating cables for operating the valve on the outside of the building, whereby the outside valve may be set in a position to allow the opening or closing of the door from within the buildmg. 7 I

3. In a device of the character described, the combination with a building having a swinging door, a cylinder pivoted to the building adjacent the door, a double acting piston in said cylinder, a piston rod carried by the piston and pivotally connected with the door, a fluid supply for each end of the cylinder, a valve within the building and controlling said fluid supply, a valve on the outside of the building for controlling the fluid supply tothe cylinder, a lock for controlling the' 

